Home / 192,881.21-289,321.88-87,730.25

Finding the Fourth Proportional to 192,881.21, 289,321.88 and 87,730.25

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Solution

The fourth proportional to 192,881.21, 289,321.88 and 87,730.25 is: 131,595.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    192,881.21 : 289,321.88 = 87,730.25 : x
  2. Step 2: Convert to fraction form
    192,881.21/289,321.88 = 87,730.25/x
  3. Step 3: Cross multiply
    192,881.21x = 289,321.88 × 87,730.25
  4. Step 4: Simplify right side
    192,881.21x = 25,382,278,977.61
  5. Step 5: Solve for x
    x = 25,382,278,977.61/192,881.21
  6. Step 6: Final answer
    x = 131,595.40

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.